Involuntary Stretching During Pregnancy. Perineal anatomy undergoes a large degree of spontaneous stretching during the course of labor and an overall resolution of this stretch can be expected postpartum. It is basically an involuntary contraction of a muscle that happens abruptly mostly at night.
Since the muscles themselves especially the uterine stomach and pelvic muscles have to stretch so much to accommodate the growing baby the muscle fibres do as well. It is basically an involuntary contraction of a muscle that happens abruptly mostly at night. Leg cramp stretch during pregnancy leg cramps painful involuntary muscle contractions that typically affect the calf foot or both are common during pregnancy often striking at night during the second and third trimesters.
Muscle fibres each have different roles in the body.
A muscle cramp is an involuntary contraction of a muscle or group of muscles that happens abruptly and is most commonly experienced at night. A muscle cramp is an involuntary contraction of a muscle or group of muscles that happens abruptly and is most commonly experienced at night. The majority of muscle cramps during pregnancy occur in the lower extremities particularly in the calves. Since the muscles themselves especially the uterine stomach and pelvic muscles have to stretch so much to accommodate the growing baby the muscle fibres do as well.